CN211062775U - Battery box and power battery system - Google Patents
Battery box and power battery system Download PDFInfo
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- CN211062775U CN211062775U CN202020033148.6U CN202020033148U CN211062775U CN 211062775 U CN211062775 U CN 211062775U CN 202020033148 U CN202020033148 U CN 202020033148U CN 211062775 U CN211062775 U CN 211062775U
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- side plate
- battery
- battery box
- bottom plate
- box body
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a battery box and power battery system belongs to electric automobile technical field. The battery box body is made of an aluminum profile and comprises a bottom plate, the bottom plate is of a cavity structure, a plurality of cross beams are arranged on the bottom plate at intervals, the cross beams are of the cavity structure, first mounting holes used for connecting battery cover plates are formed in the cross beams, the battery box body and the battery cover plates are mounted on the electric automobile through the first mounting holes, and shaft sleeves are arranged in the first mounting holes; the frame, the frame sets up perpendicularly on the bottom plate, and the edge of frame aligns with the edge of bottom plate, and through friction stir welding welded fastening between frame and the bottom plate, the frame is the cavity structure to and bottom plate and crossbeam three between form a plurality of accommodation space, all be provided with the second mounting hole that is used for fixed battery module in every accommodation space, be provided with the steel wire swivel nut in the second mounting hole. The battery box body has the beneficial effects that: the weight is lighter, the bearing capacity is better and the universality is stronger.
Description
Technical Field
The utility model relates to an electric automobile technical field especially relates to a battery box and power battery system.
Background
With the rapid development of new energy automobile technology, electric automobiles become a main development trend. In order to meet the longer endurance mileage of the electric automobile, the power battery system of the electric automobile is required to provide more energy, and the power battery system is required to keep light weight. The battery box body is a key bearing component in the power battery system, so that the battery box body is required to be lightened as much as possible while the structural strength is ensured, and the lightweight of the power battery system is realized.
However, the current battery box body is made of steel, the structure is complex, the weight is heavy, the battery box body cannot be suitable for bearing power batteries with various specifications, and the universality is poor. In order to reduce the weight of the battery box body, the adopted solution is to use the composite material to manufacture the battery box body, although the weight of the battery box body can be well reduced, the structural rigidity and the strength of the battery box body manufactured by the composite material are lower, so that the bearing capacity of the battery box body is poorer, the battery box body cannot be suitable for bearing power batteries with various specifications, and the universality of the battery box body is poorer.
In view of the above, it is desirable to design a battery box and a power battery system to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a battery box has the characteristics that weight is lighter, bearing capacity is better and the commonality is stronger.
To achieve the purpose, the utility model adopts the following technical proposal:
a battery case made of an aluminum profile, comprising:
the battery box body and the battery cover plate are mounted on the electric automobile through the first mounting holes, and a shaft sleeve is arranged in the first mounting hole;
the frame, the frame sets up perpendicularly on the bottom plate, the edge of frame with the edge of bottom plate aligns, just the frame with through friction stir welding welded fastening between the bottom plate, the frame is the cavity structure, and with the bottom plate with form a plurality of accommodation space between the crossbeam three, every all be provided with the second mounting hole that is used for fixed battery module in the accommodation space, be provided with the steel wire swivel nut in the second mounting hole.
Preferably, the battery box body further comprises a plurality of lifting lugs, the lifting lugs are arranged on the frame and are of a cavity structure, third mounting holes for mounting the battery box body to the electric automobile are formed in the lifting lugs, and steel bushings are arranged in the third mounting holes.
Preferably, the bezel includes:
a first side plate;
the side plate assembly is opposite to the first side plate, and the lifting lugs are symmetrically arranged on the first side plate and the side plate assembly.
Preferably, the frame further comprises:
one end of the second side plate is connected with the first side plate, and the other end of the second side plate is connected with the side plate assembly;
the third side plate is arranged opposite to the second side plate, one end of the third side plate is connected with the first side plate, the other end of the third side plate is connected with the side plate assembly, the second side plate is symmetrically provided with a fourth mounting hole used for installing the battery box body to the electric automobile, and a steel bushing is arranged in the fourth mounting hole.
Preferably, the second side plate and the third side plate are both provided with notches.
Preferably, the first side plate, the side plate assembly, the second side plate and the third side plate are fixed by tailor welding.
Preferably, the top end of the sleeve is provided with a seal.
Preferably, the bottom plate and the cross beam are fixed through friction stir welding.
Another object of the utility model is to provide a power battery system, the battery box that it includes has the characteristics that the weight is lighter, bearing capacity is better and the commonality is stronger.
To achieve the purpose, the utility model adopts the following technical proposal:
a power battery system comprises the battery box body.
Preferably, the power battery system further comprises a battery module and a battery cover plate, the battery box body is used for accommodating and bearing the battery module, and the battery cover plate is arranged at the top end of the battery box body so as to encapsulate the battery box body.
The utility model has the advantages that:
the utility model provides a battery box and power battery system. In the battery box body, the aluminum profile is adopted, and the bottom plate, the cross beam and the frame are all arranged into a cavity structure, so that the structure is simple, and the weight of the battery box body can be greatly reduced; the crossbeam is provided with a first mounting hole for connecting the battery cover plate, the battery box body and the battery cover plate are mounted on the electric automobile through the first mounting hole, and the shaft sleeve is arranged in the first mounting hole and can increase the connection strength between the crossbeam and the battery cover plate and between the battery box body and the electric automobile, so that the battery box body cannot fall off from the electric automobile, and the bearing capacity of the battery box body is stronger; meanwhile, second mounting holes for fixing the battery module are formed in accommodating spaces formed among the frame, the bottom plate and the cross beam, and a steel wire threaded sleeve is arranged in each second mounting hole and can increase the connection rigidity between the battery module and the bottom plate, so that the battery module is stably fixed in the battery box body; the frame and the bottom plate are fixed through friction stir welding, so that the welding strength and the structural rigidity between the frame and the bottom plate can be increased; can also be through the size that changes bottom plate and frame to form the accommodation space of equidimension not, hold and bear the battery module of multiple specification, make the commonality of battery box stronger.
Drawings
Fig. 1 is a schematic structural diagram of a battery box provided by the present invention;
fig. 2 is a schematic structural view between the bottom plate and the cross beam provided by the present invention;
fig. 3 is a schematic structural view between the shaft sleeve and the sealing member provided by the present invention;
fig. 4 is a schematic structural diagram of battery cases with different sizes provided by the present invention;
fig. 5 is a schematic structural diagram of a steel bushing provided by the present invention.
Description of reference numerals:
in the figure:
1-a bottom plate; 11-a cross beam; 111-a first boss; 1111-a first mounting hole; 12-a containment space; 13-a second boss; 131-a second mounting hole; 14-a shaft sleeve; 15-a seal; 16-a steel bushing;
21-a first side panel; 22-a second side panel; 221-a gap; 23-a third side panel; 24-a fourth side panel; 25-a fifth side panel; 26-a sixth side panel; 27-a seventh side panel; 28-eighth side panel; 29-a fourth mounting hole;
3, lifting lugs; 31-third mounting hole.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features. Like reference numerals refer to like elements throughout the specification.
In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.
Example one
The embodiment provides a battery box body used for accommodating and bearing a battery module. Specifically, the battery box is made by the aluminium alloy, as shown in fig. 1 and fig. 2, the battery box includes bottom plate 1, and bottom plate 1 is the cavity structure, and bottom plate 1 includes the polylith backup pad, and the interval is provided with many crossbeams 11 on bottom plate 1, and crossbeam 11 is the cavity structure, through friction stir welding and tailor-welded mode fixed connection between polylith bottom plate 1 and the crossbeam 11. And polyvinyl chloride (PVC for short) is sprayed on the bottom of the bottom plate 1, so that the stone breakdown resistance and the corrosion resistance of the bottom plate 1 can be effectively enhanced. The welding joint heat affected zone microscopic structure of friction stir welding changes little, and the welding is firm and non-deformable, can once accomplish the welding of longer welding seam, large cross section and different positions, and operation process conveniently realizes, and equipment is simple, and the energy consumption is low, and the efficiency is high, and is low and with low costs to the operational environment requirement.
Further, every crossbeam 11 is last all to be provided with the first mounting hole 1111 that is used for connecting the battery apron to install battery box and battery apron to electric automobile through first mounting hole 1111 on, be provided with axle sleeve 14 in the first mounting hole 1111. The cross beam 11 is provided with a first boss 111, and the first mounting hole 1111 is disposed on the first boss 111. Through setting up first boss 111, can not extrude the battery module in the battery box when the installation battery apron, make the battery apron can install the top at the battery box steadily to the battery box that will install the battery apron is fixed to electric automobile on.
As shown in fig. 3, a seal 15 is provided at the tip end of the sleeve 14. Through setting up sealing member 15, can increase the leakproofness between battery box and the battery apron to guarantee the leakproofness of the battery module in the battery box. In this embodiment, the sealing member 15 is a gasket.
Specifically, as shown in fig. 1, the battery box further includes a frame, the frame is vertically disposed on the bottom plate 1, the edge of the frame is aligned with the edge of the bottom plate 1, the frame and the bottom plate 1 are fixed by friction stir welding, the frame is of a cavity structure, a plurality of accommodating spaces 12 are formed between the frame and the bottom plate 1 and the cross beam 11, a second mounting hole 131 for fixing the battery module is disposed in each accommodating space 12, and a steel wire thread insert is disposed in the second mounting hole 131. Wherein, a second boss 13 is arranged in the accommodating space 12, and the second mounting hole 131 is arranged on the second boss 13.
The battery box is made of aluminum profiles, and the bottom plate 1, the cross beam 11 and the frame are all arranged into cavity structures, so that the structure is simple, and the weight of the battery box body can be greatly reduced; and be provided with first mounting hole 1111 that is used for connecting the battery apron on crossbeam 11 to install battery box and battery apron to electric automobile on through first mounting hole 1111, be provided with axle sleeve 14 in first mounting hole 1111, axle sleeve 14 can increase the joint strength between crossbeam 11 and the battery apron, and increase the joint strength between battery box and the electric automobile, can not make the battery box drop from electric automobile, makes the bearing capacity of battery box stronger.
Meanwhile, second mounting holes 131 for fixing the battery module are formed in the accommodating space 12 formed among the frame, the bottom plate 1 and the cross beam 11, and a steel wire threaded sleeve is arranged in each second mounting hole 131 and can increase the connection rigidity between the battery module and the bottom plate 1, so that the battery module is stably fixed in the battery box body; the frame and the bottom plate 1 are fixed through friction stir welding, so that the welding strength and the structural rigidity between the frame and the bottom plate 1 can be increased; as shown in fig. 4, the sizes of the bottom plate 1 and the frame can be changed to form accommodating spaces 12 with different sizes, so as to accommodate and bear battery modules of various specifications, and the battery box has strong universality.
Further, the battery box body further comprises a plurality of lifting lugs 3, the lifting lugs 3 are all arranged on the frame, the lifting lugs 3 are of a cavity structure, third mounting holes 31 used for mounting the battery box body to the electric automobile are formed in the lifting lugs 3, and steel bushings 16 are arranged in the third mounting holes 31. Through setting up steel bush 16, can increase the joint strength between lug 3 and the electric automobile to increase the joint strength between battery box and the electric automobile, prevent that the battery box from droing from the electric automobile, make the bearing capacity of battery box stronger.
Specifically, the frame includes first curb plate 21 and curb plate subassembly, and the curb plate subassembly sets up with first curb plate 21 is relative, and lug 3 symmetry sets up on first curb plate 21 and curb plate subassembly. In this embodiment, the side plate assembly includes a fourth side plate 24, a fifth side plate 25, a sixth side plate 26, a seventh side plate 27, and an eighth side plate 28, which are connected in sequence.
In this embodiment, two lifting lugs 3 are arranged on the first side plate 21, one lifting lug 3 is arranged on the fourth side plate 24, one lifting lug 3 is arranged on the eighth side plate 28, and the two lifting lugs 3 on the first side plate 21 are respectively arranged symmetrically with the lifting lugs 3 on the fourth side plate 24 and the eighth side plate 28, so that the lifting lugs 3 are symmetrically arranged, and it can be ensured that when the battery box body is installed on an electric vehicle, the installation symmetry uniformity is better, and the installation stability is better.
Further, the frame further includes a second side plate 22 and a third side plate 23, and the third side plate 23 is disposed opposite to the second side plate 22. Wherein, one end of the second side plate 22 is connected with the first side plate 21, and the other end is connected with the fourth side plate 24 in the side plate assembly; one end of the third side plate 23 is connected with the first side plate 21, the other end is connected with the eighth side plate 28 in the side plate assembly, and the second side plate 22 and the third side plate 23 are symmetrically provided with fourth mounting holes 29 for mounting the battery box body to the electric vehicle, as shown in fig. 5, steel bushings 16 are arranged in the fourth mounting holes 29. The second side plate 22 and the fourth mounting hole 29 on the third side plate 23 are symmetrically arranged, so that the battery box can be mounted on the electric automobile with good symmetry uniformity and good mounting stability.
Through setting up steel bush 16, can increase the joint strength between first curb plate 21 and second curb plate 22 and the electric automobile to increase the joint strength between battery box and the electric automobile, prevent that the battery box from droing from the electric automobile, make the bearing capacity of battery box stronger. In this embodiment, the first side plate 21, the fourth side plate 24, the fifth side plate 25, the sixth side plate 26, the seventh side plate 27, the eighth side plate 28, the second side plate 22, and the third side plate 23 in the side plate assembly are fixed by tailor welding. The welding strength is better, and the connection is stable.
Meanwhile, the battery box body is arranged on the electric automobile through the first mounting hole 1111 on the first boss 111 on the cross beam 11, the third mounting hole 31 on the lifting lug 3, and the fourth mounting holes 29 on the second side plate 22 and the third side plate 23, so that the bearing capacity of the battery box body is greatly enhanced, and the rigidity and the strength of the battery box body are improved.
Further, the second side plate 22 and the third side plate 23 are both provided with a gap 221. By providing the notch 221, the weight of the second side plate 22 and the third side plate 23 can be further reduced, and the normal use of other functions of the second side plate 22 and the third side plate 23 is not affected.
Example two
The embodiment provides a power battery system, which comprises a battery box body in the first embodiment. Specifically, power battery system still includes battery module and battery apron, and the battery box is used for holding and bears the weight of battery module, and the battery apron sets up on the top of battery box to with battery box encapsulation.
The specific process of installing the power battery system to the electric vehicle in this embodiment is as follows: firstly, fixing the battery module in the battery box body through the second mounting hole 131 on the second boss 13 in the accommodating space 12, and then mounting the battery cover plate on the top end of the battery box body through the first mounting hole 1111 on the first boss 111 on the cross beam 11 to encapsulate the battery box body; then, the battery box body is mounted on the electric automobile through the first mounting hole 1111 on the first boss 111 on the cross beam 11, the third mounting hole 31 on the lifting lug 3, and the fourth mounting hole 29 on the second side plate 22 and the third side plate 23, so that the whole mounting process of mounting the power battery system on the electric automobile is completed.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (10)
1. The utility model provides a battery box which characterized in that, battery box is made by the aluminium alloy, includes:
the battery box comprises a bottom plate (1), wherein the bottom plate (1) is of a cavity structure, a plurality of cross beams (11) are arranged on the bottom plate (1) at intervals, the cross beams (11) are of the cavity structure, first mounting holes (1111) used for connecting a battery cover plate are formed in the cross beams (11), the battery box body and the battery cover plate are mounted on an electric automobile through the first mounting holes (1111), and shaft sleeves (14) are arranged in the first mounting holes (1111);
the frame, the frame sets up perpendicularly on bottom plate (1), the edge of frame with the edge alignment of bottom plate (1), just the frame with it is fixed through friction stir welding between bottom plate (1), the frame is the cavity structure, and with bottom plate (1) with form a plurality of accommodation space (12) between crossbeam (11) the three, every all be provided with second mounting hole (131) that are used for fixed battery module in accommodation space (12), be provided with the steel wire swivel nut in second mounting hole (131).
2. The battery box body as claimed in claim 1, further comprising a plurality of lifting lugs (3), wherein the plurality of lifting lugs (3) are arranged on the frame, the lifting lugs (3) are of a cavity structure, a third mounting hole (31) for mounting the battery box body to the electric vehicle is formed in each lifting lug (3), and a steel bushing (16) is arranged in each third mounting hole (31).
3. The battery box of claim 2, wherein the bezel comprises:
a first side plate (21);
the side plate assembly is arranged opposite to the first side plate (21), and the lifting lugs (3) are symmetrically arranged on the first side plate (21) and the side plate assembly.
4. The battery box of claim 3, wherein the bezel further comprises:
a second side plate (22), wherein one end of the second side plate (22) is connected with the first side plate (21), and the other end of the second side plate is connected with the side plate assembly;
the battery box body is installed to the electric automobile through the first side plate (21), the second side plate (23) and the second side plate (22) are arranged oppositely, one end of the third side plate (23) is connected with the first side plate (21), the other end of the third side plate is connected with the side plate assembly, the second side plate (22) and the third side plate (23) are symmetrically provided with a fourth installation hole (29) used for installing the battery box body to the electric automobile, and the steel bushing (16) is arranged in the fourth installation hole (29).
5. The battery box body according to claim 4, wherein the second side plate (22) and the third side plate (23) are provided with notches (221).
6. The battery box body according to claim 4, wherein the first side plate (21), the side plate assembly, the second side plate (22) and the third side plate (23) are fixed by tailor welding.
7. A battery case according to claim 1, wherein the top end of the shaft sleeve (14) is provided with a sealing member (15).
8. The battery box according to claim 1, characterized in that the bottom plate (1) and the cross beam (11) are fixed by friction stir welding.
9. A power cell system, comprising the battery case of any of claims 1-8.
10. The power cell system of claim 9, further comprising a battery module and a battery cover, wherein the battery housing is configured to receive and carry the battery module, and wherein the battery cover is disposed at a top end of the battery housing to enclose the battery housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020033148.6U CN211062775U (en) | 2020-01-08 | 2020-01-08 | Battery box and power battery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020033148.6U CN211062775U (en) | 2020-01-08 | 2020-01-08 | Battery box and power battery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211062775U true CN211062775U (en) | 2020-07-21 |
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ID=71596764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020033148.6U Active CN211062775U (en) | 2020-01-08 | 2020-01-08 | Battery box and power battery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211062775U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113629333A (en) * | 2021-06-25 | 2021-11-09 | 东风汽车集团股份有限公司 | Box, power battery and vehicle |
| CN114361698A (en) * | 2021-12-30 | 2022-04-15 | 中国第一汽车股份有限公司 | Battery pack mounting and connecting device, connecting method and vehicle |
-
2020
- 2020-01-08 CN CN202020033148.6U patent/CN211062775U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113629333A (en) * | 2021-06-25 | 2021-11-09 | 东风汽车集团股份有限公司 | Box, power battery and vehicle |
| CN114361698A (en) * | 2021-12-30 | 2022-04-15 | 中国第一汽车股份有限公司 | Battery pack mounting and connecting device, connecting method and vehicle |
| WO2023124268A1 (en) * | 2021-12-30 | 2023-07-06 | 中国第一汽车股份有限公司 | Battery pack mounting connection device, battery pack mounting connection method, and vehicle |
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